US4469928A - Top loading detachable stud feeding assembly - Google Patents
Top loading detachable stud feeding assembly Download PDFInfo
- Publication number
- US4469928A US4469928A US06/387,338 US38733882A US4469928A US 4469928 A US4469928 A US 4469928A US 38733882 A US38733882 A US 38733882A US 4469928 A US4469928 A US 4469928A
- Authority
- US
- United States
- Prior art keywords
- stud
- assembly
- loading
- loading tube
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/20—Stud welding
- B23K9/206—Stud welding with automatic stud supply
Definitions
- the present invention applies to stud welding guns and, more particularly, to improvements to stud welding guns utilizing automatic stud feeding equipment.
- the overall components of such a system would be the hand held stud welding gun itself, an automatic stud chucking assembly carried by the stud welding gun and a stud loading assembly for delivering the studs to the automatic stud chucking assembly.
- stud welding power supply and controller Positioned remote from the stud welding gun in such a system is the conventional stud welding power supply and controller which are electrically interconnected with the stud welding gun. Additionally, a stud orientator and stud feeder are utilized which feed the studs to the stud loading assembly by flexible feed tubes and also provide the pneumatic control for the stud chucking assembly.
- the conventional stud chucking assembly is positioned on the front of the stud welding gun.
- the piston assembly is interconnected to the lift mechanism of the stud welding gun and includes a piston and piston rod.
- a stud receiving chamber Interconnected to the end of the piston assembly is a stud receiving chamber which has a receiving chamber entrance through which studs to be loaded pass.
- the stud receiving chamber in conventional automatic feed stud welding guns is in the bottom or underneath the side of the stud receiving chamber and receives the studs in a slightly inclined vertically upward direction.
- a conventional stud chuck is positioned on the opposite end of the stud receiving chamber.
- the conventional stud loading assembly is positioned beneath the stud receiving chamber and is supported either upon the leg assembly of the stud welding gun or the stud receiving chamber itself.
- the stud loading assembly includes a stud loading tube, one end of which is connected to the stud feed tube and the other end which arcs upwardly into communication with the receiving chamber entrance of the stud receiving chamber.
- the stud loading assembly is secured to the stud welding gun by conventional threaded fasteners or other semi-permanent devices and is not readily detachable.
- the conventional automatic stud welding equipment in operation, will pneumatically dispatch a stud through the stud feed tube into the stud loading tube whereupon the stud is blown upwardly into the stud receiving chamber via the receiving chamber entrance.
- the stud is held in the stud receiving chamber by the air pressure blowing against the stud.
- the piston assembly is operated and the stud is pushed through the stud receiving chamber by the piston rod into the chuck preparatory to welding.
- a typical use of such automatic stud welding equipment would be in welding heat transfer boiler tube studs inside of boilers and the like. In such applications, speed of operation is critical in that literally thousands of studs of identical configuration need be welded.
- the welding angle may be any angle from vertically downward, vertically overhead to any angle in between.
- the conventional automatic stud welding equipment with the bottom feeding of studs to the stud receiving chamber provides a condition where gravity effect upon the studs can result in less reliable operation due to stud jamming. Further, the conventional equipment requires considerable time to disassemble and reassemble the stud loading tube from the stud loading assembly to clear a jam. Lastly, the conventional equipment provides a dangerous situation in that there is no safety to prevent discharge of the studs from the stud loading tube while the stud loading tube is disassembled and the stud welding gun is being cycled to clear the jam.
- the present invention provides improvements to the conventional automatic stud welding equipment to overcome the disadvantages and problems discussed above.
- the stud receiving chamber and receiving chamber entrance are orientated such that the studs are fed into the stud receiving chamber vertically downwardly into the receiving chamber rather than upwardly. In this manner, gravity aids in the retention of the stud within the receiving chamber rather than distracting from such retention.
- the stud loading assembly including the stud loading tube to which the studs are discharged is likewise positioned on top of the stud welding gun rather than beneath. In this fashion, studs being discharged through the stud feed tube and into the stud loading tube likewise are aided by gravity in feeding of the stud into the stud receiving chamber.
- the stud loading assembly utilizes a stud block and disconnect assembly which provides the dual function of the supporting and detachably connecting the stud loading tube to the stud welding gun as well as to provide a block against discharge of studs through the stud loading tube when the assembly is detached.
- the stud block disconnect assembly includes a slide which has two apertures within the slide.
- the slide is spring loaded and slides between a slide retainer plate and a loading tube clamp plate.
- the apertures of the slide cooperate with retaining lugs on a load tube faceplate assembly secured to the stud welding gun such that when the slide is actuated, the apertures of the slide will engage or disengage annular grooves in the retaining lugs to either lock or unlock the stud block disconnect assembly from the stud welding gun.
- the slide also includes a further aperture therein through which the stud loading tube passes.
- a stud blocking slot formed in the side of the stud loading tube cooperates with a side wall of the aperture in the slide through which the stud loading tube passes such that, when the assembly is disengaged and the slide moved to a first position under the spring pressure, the side wall of the aperture will partially block the stud loading tube in this position but will be clear of the stud loading tube when the assembly is in engaged position whereupon the slide is in a second position.
- the stud loading assembly may be quickly disconnected and reconnected to clear any possible jam. Additionally, while disconnected, protection is provided against the accidental discharge of studs from the stud loading tube.
- FIG. 1 is a perspective view of the stud welding equipment of the present invention with the stud loading assembly in engaged position;
- FIG. 2 is a perspective view of the stud welding equipment of the present invention with the stud loading assembly in disengaged position;
- FIG. 3 is an exploded perspective view of the stud loading tube and stud block and disconnect assembly of the present invention
- FIG. 4 is a top sectional view of the stud block and disconnect assembly in engaged position
- FIG. 5 is a top sectional view of the stud block and disconnect assembly during engagement with the stud welding gun.
- FIG. 6 is a top sectional view of the stud block and disconnect assembly in stud blocking position.
- the automatic stud welding equipment of the present invention including the stud chucking assembly and stud loading assembly is shown in FIG. 1 in assembled relationship one to another and in FIG. 2 wherein the stud loading assembly is disassembled from the stud welding gun and stud chucking assembly.
- the stud chucking assembly 10 is secured to the front end of the stud welding gun 11.
- the stud loading assembly 12 is secured to the stud welding gun above the stud chucking assembly.
- the stud chucking assembly 10 includes a piston assembly. 13 secured to the front of the stud welding gun 11.
- the piston assembly utilizes a conventional piston (not shown) operated by means of an appropriate air hose 14.
- the piston carries a piston rod (not shown) which traverses into and out of the stud receiving chamber 15 under control of the stud feeding apparatus.
- the stud receiving chamber 15 is secured at one end to the piston assembly 13.
- the stud receiving chamber 15 includes a receiving chamber entrance 16, the open end of which is positioned upwardly facing. In this manner, studs delivered to the stud receiving chamber are delivered in an inclined downwardly direction under the influence of gravity.
- the opposite end of the stud receiving chamber 15 terminates in a chuck adapter 17.
- a conventional stud chuck (not shown) is secured to the chuck adapter 17.
- the stud welding gun includes a leg assembly 18.
- a footpiece 19 is secured to the leg assembly 18.
- An arc shield retainer 20 is likewise carried by the footpiece 19.
- the piston assembly and piston rod are withdrawn from the stud receiving chamber 15.
- a stud is delivered to the stud receiving chamber 15 via the receiving chamber entrance 16.
- the piston and piston rod advances moving the stud through the stud receiving chamber 15 and chuck adapter 17 into the chuck positioned within the arc shield 20. Welding of the stud occurs in the normal stud welding cycle whereupon the piston and piston rod are again retracted from the stud receiving chamber 15.
- the stud loading assembly 12 includes a load tube faceplate assembly 21 which is secured to the stud welding gun back of the piston assembly 13.
- the faceplate assembly 21 includes two retaining lugs 22 secured to the faceplate assembly 21 and facing rearwardly of the stud welding gun.
- Each retaining lug 22 is of cylindrical configuration and includes a tapered insertion face 23 which aids in assembly of the apparatus as to be described in more detail hereinafter. Additionally, each retaining lug 22 includes an annular recess 22a which provides the interlock of the apparatus as to be described in more detail hereinafter.
- the stud loading assembly 12 includes a stud loading tube 24.
- the stud loading tube 24 is surrounded by a shrink tube insulation covering 25. Additionally, the stud loading tube 24 includes a stud blocking slot 26 cut through the wall of the stud loading tube and the insulation covering.
- a stud block and disconnect assembly 27 When the stud block and disconnect assembly 27 is secured in place to the load tube face plate assembly 21, as shown in FIG. 1, the discharge end 28 of the stud loading tube 24 is positioned in communication with and slightly above the stud receiving chamber 15.
- the opposite end 29 of the stud loading tube 24 extends from the rear of the stud block and disconnect assembly 27 and is secured to a stud feed tube 30 by means of a hose clamp 31. During operation, studs are fed through the stud feed tube 30 and the stud loading tube 24 to the stud receiving chamber 15.
- the details of the stud block and disconnect assembly 27 are shown in FIG. 3.
- the stud block and disconnect assembly includes a slide retainer plate 32 and a load tube clamping plate 33.
- a slide 34 is positioned between the slide retainer plate 32 and load tube clamp plate 33.
- a compression spring 38 is provided to urge the slide to the right-hand position as seen in FIG. 3.
- the spring 38 is held in place, at one end, by a dowel pin 39 in the slide 34 and by a recess (not shown) in the loading tube clamp plate 38 into which the opposite end of the spring fits.
- the stud loading tube 24 is held in place in the stud block and disconnect assembly 27 by means of a loading tube clamp 40.
- the loading tube clamp 40 has a clamp face 41 which cooperates with a clamp face 42 of the loading tube clamp plate 33.
- the loading tube clamp 40 is designed to engage the rear portion of the stud loading tube 24 and is secured in place by two cap screws 43.
- the stud loading tube 24 When in assembled relation, the stud loading tube 24 passes through an aperture 44 in the slide retainer plate 32. In a like manner, the stud loading tube 24 passes through an aperture 45 in the slide 34.
- the shrink tube insulation covering 25 around the stud loading tube 24 insulates the stud block and disconnect assembly 27 from the stud loading tube 24. This insulation is required in the unlikely event that electrical interconnection is made between the stud loading tube 24 and the stud receiving chamber 15 which is energized during the welding operation.
- the slide 34 as a part of aperture 45, includes a blocking wall 46.
- the blocking wall 46 cooperates with the stud blocking slot 26 of the stud loading tube 24 to block the stud loading tube 24 when the stud loading assembly is disconnected from the stud welding gun.
- the slide 34 also includes two locking apertures 47 at either end of the slide.
- the locking apertures 47 cooperate with the retaining lugs 22 to provide interlock of the stud block and disconnect assembly 27 with the stud welding gun 11.
- FIGS. 4-6 Shown in FIGS. 4-6 is the stud block and disconnect assembly 27 in interlocked position, in the process of interlock or disengagement and when disengaged from the load tube face assembly 21 respectively.
- FIG. 5 there is illustrated the relative relationship of the slide 34, locking apertures 47 and the retaining lugs 22 during engagement and disengagement of the stud block and disconnect assembly 27 with the load tube face plate assembly 21.
- the slide 34 is moved transversely against the spring 38 to a point wherein the locking apertures 47 align with lug apertures 48 and 49 within the loading tube clamp plate 33 and slide retainer plate 32 respectively.
- the insertion face 23 of the retaining lugs 22 aids in guiding of the retaining lugs within the respective apertures.
- the stud block and disconnect assembly 27 is pushed upon the retaining lugs 22 until the loading tube clamp plate 33 engages the load tube face plate assembly 21. At this point, pressure is released from the slide 34 and the spring 38 urges the slide in a left-hand direction looking at FIG. 4. The slide moves transversely until the side wall of the locking apertures 47 engage the annular recesses 22a of each retaining lug 22 whereupon the stud block and disconnect assembly 27 is interlocked with the load tube face plate assembly and secured in place. In this position, the blocking wall 46 of the slide 34 is clear of the stud blocking slot 26.
- FIG. 6 Shown in FIG. 6 is the relationship of the slider relative to the stud loading tube 24 when the stud block and disconnect assembly 27 is disconnected from the load tube face plate assembly 21.
- the slider 24 is urged to the left as shown in FIG. 6 until the slide limit notch 37b engages a spacer 35.
- the blocking wall 46 of the slide 34 partially blocks the stud loading tube 24. In this manner, a stud being discharged through the stud feed tube 30 will not be permitted to pass from the stud loading tube 24 while the stud block and disconnect assembly 27 is disengaged and the stud welding equipment being cycled.
- the stud welding equipment of the present invention provides a stud chucking assembly which has an upturned stud receiving chamber for top loading of studs. This provides the definite advantage of gravity assisting in loading of the studs rather than working against such during most normal angulation and utilization of the stud welding gun.
- the automatic stud welding equipment of the present invention further provides a quick and efficient means for disconnecting of the stud loading assembly from the stud welding gun to facilitate in clearing of any blockage. Additionally, while the stud loading assembly is disconnected, accidental discharge of studs from the stud loading tube is eliminated.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)
- Arc Welding Control (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Turning (AREA)
- Resistance Welding (AREA)
Abstract
Description
Claims (5)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/387,338 US4469928A (en) | 1982-06-11 | 1982-06-11 | Top loading detachable stud feeding assembly |
EP83902347A EP0111556A1 (en) | 1982-06-11 | 1983-06-09 | Top loading detachable stud feeding assembly |
PCT/US1983/000903 WO1983004383A1 (en) | 1982-06-11 | 1983-06-09 | Top loading detachable stud feeding assembly |
AU17771/83A AU1777183A (en) | 1982-06-11 | 1983-06-09 | Top loading detachable stud feeding assembly |
ES523149A ES8502012A1 (en) | 1982-06-11 | 1983-06-10 | Top loading detachable stud feeding assembly. |
JP58104838A JPS594977A (en) | 1982-06-11 | 1983-06-11 | Automatic stud welder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/387,338 US4469928A (en) | 1982-06-11 | 1982-06-11 | Top loading detachable stud feeding assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
US4469928A true US4469928A (en) | 1984-09-04 |
Family
ID=23529449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/387,338 Expired - Fee Related US4469928A (en) | 1982-06-11 | 1982-06-11 | Top loading detachable stud feeding assembly |
Country Status (5)
Country | Link |
---|---|
US (1) | US4469928A (en) |
EP (1) | EP0111556A1 (en) |
JP (1) | JPS594977A (en) |
ES (1) | ES8502012A1 (en) |
WO (1) | WO1983004383A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4792655A (en) * | 1987-10-20 | 1988-12-20 | Emhart Industries, Inc. | Stud welding system feeding device |
US5130510A (en) * | 1990-05-03 | 1992-07-14 | Massachusetts Institute Of Technology | Automated shear stud welding system |
US5233151A (en) * | 1991-03-30 | 1993-08-03 | Yoshitaka Aoyama | Device for controlling feed speed of parts |
US5779609A (en) * | 1996-01-16 | 1998-07-14 | Applied Robotics, Inc. | Integrated stud welding robotic tool changing system |
US5824987A (en) * | 1995-08-17 | 1998-10-20 | Hbs Bolzenschweiss-Systeme Gmbh & Co. Kg | Welding stud feeder |
US6388224B1 (en) | 1999-12-28 | 2002-05-14 | Abb T&D Technology Ltd. | Systems for robotic stud arc welding without ferrule |
US6491612B1 (en) | 2000-10-23 | 2002-12-10 | Ati Industrial Automation, Inc. | Stud welding tool changer |
US20030034036A1 (en) * | 1997-09-06 | 2003-02-20 | Franz Waldeck | Tracheotomy cannula with shield plate |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6117982U (en) * | 1984-07-09 | 1986-02-01 | 正視 荒木 | Frozen dessert manufacturing equipment |
JP6071731B2 (en) * | 2013-04-30 | 2017-02-01 | 日本ドライブイット株式会社 | Stud storage pipe valve structure |
CN109175625B (en) * | 2018-09-26 | 2024-01-30 | 浙江上势自动焊接科技有限公司 | Turntable type stud welding gun |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3546419A (en) * | 1964-05-21 | 1970-12-08 | Warren Fastener Corp | Self-loading stud welding apparatus |
US3792223A (en) * | 1970-06-01 | 1974-02-12 | Trw Inc | Stud welding tool and stud loading device therefor |
US3854027A (en) * | 1972-09-13 | 1974-12-10 | Usm Corp | Percussive stud welding system |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3679860A (en) * | 1970-06-01 | 1972-07-25 | Trw Inc | Stud welding tool and stud loading device therefor |
JPS5043269U (en) * | 1973-08-17 | 1975-05-01 |
-
1982
- 1982-06-11 US US06/387,338 patent/US4469928A/en not_active Expired - Fee Related
-
1983
- 1983-06-09 EP EP83902347A patent/EP0111556A1/en not_active Withdrawn
- 1983-06-09 WO PCT/US1983/000903 patent/WO1983004383A1/en unknown
- 1983-06-10 ES ES523149A patent/ES8502012A1/en not_active Expired
- 1983-06-11 JP JP58104838A patent/JPS594977A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3546419A (en) * | 1964-05-21 | 1970-12-08 | Warren Fastener Corp | Self-loading stud welding apparatus |
US3792223A (en) * | 1970-06-01 | 1974-02-12 | Trw Inc | Stud welding tool and stud loading device therefor |
US3854027A (en) * | 1972-09-13 | 1974-12-10 | Usm Corp | Percussive stud welding system |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4792655A (en) * | 1987-10-20 | 1988-12-20 | Emhart Industries, Inc. | Stud welding system feeding device |
US5130510A (en) * | 1990-05-03 | 1992-07-14 | Massachusetts Institute Of Technology | Automated shear stud welding system |
US5233151A (en) * | 1991-03-30 | 1993-08-03 | Yoshitaka Aoyama | Device for controlling feed speed of parts |
US5824987A (en) * | 1995-08-17 | 1998-10-20 | Hbs Bolzenschweiss-Systeme Gmbh & Co. Kg | Welding stud feeder |
US5779609A (en) * | 1996-01-16 | 1998-07-14 | Applied Robotics, Inc. | Integrated stud welding robotic tool changing system |
US20030034036A1 (en) * | 1997-09-06 | 2003-02-20 | Franz Waldeck | Tracheotomy cannula with shield plate |
US7699055B2 (en) * | 1997-09-06 | 2010-04-20 | Tracoe Gesellschaft Fur Medizinische Bedarfsgegenstande Mbh | Tracheotomy cannula with shield plate |
US6388224B1 (en) | 1999-12-28 | 2002-05-14 | Abb T&D Technology Ltd. | Systems for robotic stud arc welding without ferrule |
US6491612B1 (en) | 2000-10-23 | 2002-12-10 | Ati Industrial Automation, Inc. | Stud welding tool changer |
Also Published As
Publication number | Publication date |
---|---|
ES523149A0 (en) | 1984-05-01 |
JPS594977A (en) | 1984-01-11 |
WO1983004383A1 (en) | 1983-12-22 |
JPH0225709B2 (en) | 1990-06-05 |
EP0111556A1 (en) | 1984-06-27 |
ES8502012A1 (en) | 1984-05-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: OMARK INDUSTRIES, INC., 2100 S.E. MILPORT ROAD, PO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:WILKINSON, HAROLD C.;MKITARIAN, ALAN W.;NAVARRA, VITO P.;AND OTHERS;REEL/FRAME:004014/0495 Effective date: 19820610 |
|
AS | Assignment |
Owner name: KSM FASTENING SYSTEMS INC., 301 NEW ALBANY ROAD, M Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:OMARK INDUSTRIES, INC. A CORP. OF OR;REEL/FRAME:004204/0543 Effective date: 19831220 Owner name: MIDLANTIC NATIONAL BANK, 200 BROADACRES DRIVE BLOO Free format text: SECURITY INTEREST;ASSIGNOR:KSM FASTENING SYSTEMS, INC.;REEL/FRAME:004204/0549 Effective date: 19831220 |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
FP | Expired due to failure to pay maintenance fee |
Effective date: 19920906 |
|
AS | Assignment |
Owner name: KSM FASTENING SYSTEMS, INC. Free format text: SECURITY INTEREST;ASSIGNOR:MIDLANTIC NATIONAL BANK;REEL/FRAME:007416/0377 Effective date: 19950209 |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |